Improvement in steam and water check-valves



"i @kleine ,gratte geen t @time "www Y E. H. ASHCROFTQOF LYN, MASSACHUSETTS. Letters Patent No. 83,588, dated November 3, 1868.

IN STEAM AND WATER CHECK-VALVES.

The Schedule referred to in these Letters Patent andImaking part: of the same.

To all whom 'it may concern Be it known that I, E. H. ASHGROFT, of the city of Lynn, county of Essex, in the State of Massachusetts, have invented a new and useful Improvement in- CheckValve for Steam-Pumps, Steam-Boiler, and other Apparatus; and I do hereby declare that .the following is a full and exact description thereof, reference being had to the accompanying drawing, making a part of this specification, in which like parts are indicated by like letters in the several figures.

The nature of my invention consists in the construction and arrangement ot parts relating to a check-valve and union joint.

To enable others skilled in the art to make and use Vmy invention, I will proceed to describe its construction and operation.

In the drawings- Figure 2 represents an elevation of my invention, and Figure 3, a longitudinal axial section of the same; whilst Figure lis a similar section of the common check- In figs. 2 and 3, O represents the body of my valve,

D and E completing it, at the same time forming a joint, the former being a nut connecting C and E, or the pipe together, E forming a seat for valve e, the stein s of which passes through the two guide-pieces f and g, which form a pait of the body G.

The coupling or connection of parts C, D, and E is readily seen by the section, iig. 3. To disconnect these parts for repairs, it is only necessary to run back thennt-D, as seen in red lines; C and D being disconnected, C and E can readily be, and the valve e and its seat are accessible for repairs, &c.

The rear end of the valve e maybe' recessed, and a rubber Washer, i, be tted in the said recess, which,

when the valve 'is violently forced back, will break the concussion, relieving the shock, and avoid the breaking ofthe valve, its stem, or guides.

Having thus described my invention,

What I claim ,as new, and desire to secure by Let` ters Patent of the United States, is4

The construction of the piece E, and its arrange# menyt'in relation to the valve-piece e, piece O, and union-joint piece D, substantially as shown and described;

AE. H. ASHCROET.y

Witnesses z Enwnv J. WRIGHT, C. E. Asncnor'r. 

